Angie Hurtado scored twice on Wednesday night at Truckee to help Sparks stun the first-place Wolverines, 3-2.
She scored the game winner with three minutes in left in regulation.
Sparks improved to 6-3-0, 6-5-2 to strengthen its playoffs hopes. Truckee (10-6-0, 8-1-0) suffered its first league loss of the season.
“I can’t express how proud I am of their hard work,” Sparks coach Art Hurtado said. “But I told them that we still have a long way to go to make playoffs.”
The Wolverines scored two goals in the first 22 minutes of the match but were unable to get on the board again.
“We were getting into that mindset that they (Truckee) were better because of the quick goals but I kept them in it by just yelling from the side lines to keep marking and making the runs,” Hurtado said. “(We made adjustments) and things started working the right way, got them on their heels.”
Hutado split a 2-0 halftime deficit in the 60th minute. Eight minutes later, she assisted the equalizer to Lizeth Garcia before giving Sparks its first lead in the 77th.
The Railroaders host Fernley on Saturday at noon.